I just ran across Alan Cooper's keynote at Agile 2008. The gist is that he's making the case for integrating interaction design into Agile development, something that is near and dear to me, as well. I was pleasantly surprised by his talk, and I recommend it to all my dev friends.

You can quickly scan through the slides and his notes to get the whole story. I'm not sure if I could have said it better myself!